Cement roofing.



No. 708,307. Patented sept; 2, |902.,y l H. snuck.

CEMENT BUUFING. (Appucatian med mni's, 1902.)

\ N VE N Tbl- Mide@ 370076 (No Model.)

Q ATTOH To cl/ZZ whom t may concern,.-

@arent anion.

HOLDEN BROCK, OF ST. PAUL, MINNESOTA.

CEMENT ROOFING.

SPECIFICATION forming part of Letters Patent No. 708,307, dated september 2, 1.902.

Application filed March 18, 1902. SerialrNo. 98,711. (No model.)

Be it known that I, HOLDEN BROCK, a subject of the King of Denmark, and a resident of St. Paul, in the county of Ramsey and State of Minnesota, have invented anew andlmproved Cement Roofing, of which the following'is a full, clear, and eXact description.

" The purpose of the invention is to provide cement roofing-panels of such construction that opposing panels will have overlapping interlocking connection and so that longitu-` dinal gutters willbe formed `therein to promote the ready discharge of water.

A further purposeof the invention is to so construct the panels that they-may be securely held to the roof-lathing each by a single nail and so that a row of panels when in place may be tiedto the roof-lathing by a- Asimple system of wiring applied from the inside of the structure, all fastening devices being invisible from theoutside. Y

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claim. p

Reference is to be had tothe accompanying drawings, forming a part of this specification,

in which similar characters of reference indifV cate correspondingparts in all the figures.

Figure 1 is a vertical section through a portion of a Mansard roof and through the improved panels applied to its sloping side substantially on the line 1 1 in Fig. 2. Fig. 2 isan inside elevation of a portion of a roof structure and panels laid thereon, illustrating how the panels are held in place. Fig. 3 is an enlarged horizontal section taken substantially on the line 3 3 of Fig. 1; and Fig. Il is a perspective view of a panel, displaying its inner face in full. p

The panels A are of a cementinaterial and may be of any size, and each panel isprovided upon its upperor exposedsurface with two longitudinal gutters 10 and 11 and a cor? responding central depression 12 in its under or back` surfaces, and the gutter 10 extends to the adjacent longitudinal edge of the panel. Between the ends of the depression 12 a trans- Verse rib 13 is formed, whose rear edge is preferably flush With the plain under or back surface 14 of the panel at each side of the depression. This rib has an aperture 15 made therein, as indicated in Fig. 4. At one end of the depression 12 a lug'lG is formed upon the under or back surfaces of each panel, and the lugl extends horizontally or at right angles to the under or back surface of a panel,

as is best shown in Fig. 4. AVEach lug 16 of a panel is provided With an aperture-17, through which a nail or a screw 18 is adapted to be passed. Alongitudinal recess 19 is produced in the under or back surface of each panel at one longitudinal edge, and in the depressed wall of this recess longitudinal teeth 20 are made, which extendfrom end to end of a lpanel and are practically in the same plane with the bottom ot'V thegutters 10 and 11, as is shown in Fig. 3. At the opposite longitudinal edge of each panel, also at its back surface, a secon d longitudinal recess 21 is produced, whose face-wall is more or less transversely inclined or curved. At the upper or Mexposed surface of each panel `that portion .22 over the toothed recess 19 is flat andflush with the exposed surface between the gutters 10 and 11, while `the corresponding exposed portion 23 of the panel at its opposite side or that portion over the plain recess 2l is substantially flush `with the bottom surface of the gutter 10 and is provided with longitudinal Ateeth 24. A The side walls of the gutters 10 and 11 and likewise the side walls of the depression 12 are preferably made inclined to increase the stability of the panel. l

The structure of the roof upon which the panels are to be laid may consist, as illustrated,'of uprights 25 and beams 26 laid horizontally upon the uprights and secured to the saine. 4The lugs 16 of the panels are at their upper ends, and the panels are laid in horizontal rows upon the roof-frame, the lower y IOO lnent with the teeth 24; of the next panel, so that there is an overlapping and locking connection between the panels, rendering the connections water-tight and forming at the outside of the combined panels a series of regularly-spaced gutters to direct the discharge of Water and a series of Ventilatingchannels between the panels and roof-framing. Vhen a row of panels has been placed and secured in position by means of the screws or nails 18, said panels are attached to the next beam 26 below through the medium of 'a wire 27, which wire is passed through staples 28, located on the beams 26, and through the apertures 15 in the ribs 13 at the rear of the panels, as is best shown in Fig. 2. In this manner the panels may be secured to the roof-framing at the top and at their bottom edges, and,as stated, an upper row of panels may overlap the row below.

It is obvious that the attachment ofthe pan- I els to the roof-framing can be expeditiously and conveniently effected and that none of the attaching devices will be Visible at the exterior of a roof so constructed.

It will be observed by reference to Figs. 3 and 4L that the plain under or back surfaces 14C are in the form of ribs extending beyond the plane of the under surface of the panel at its side edge portions and that the plain under or back side surfaces are substantially in the same plane with the bottom of the channel 12.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- A cement roofing-panel, provided with longitudinal gutters in its exposed surface, one

at each side ofthe center and corresponding side edge and a longitudinal plain recess at its opposite side edge, transversely inclined, the front exposed surface of the panel at one longitudinal edge being beyond the plane of the bottom of the gutters and the corresponding exposed surface of the opposite side edge of the panel being in the same plane with the bottom of the gutters and provided with longitudinal teeth, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HOLDEN BROCK. Vitnesses:

C. H. BIoRN, JULIUs RAsMUssEN. 

